[LX-1442] Adjust Helm deployment templates and value files

[cachemeoutside]

The following changes have been made:

• oral-history-env now accepts the literal value of web.env. This means you don't have to copy/paste values in both the values.yaml file and the configmap localtions
• Added env section in deployment template for dependent environment variable substitution. This was added to support setting SOLR_URL. See here: https://kubernetes.io/docs/tasks/inject-data-application/define-interdependent-environment-variables/
• Turned off Solr Cloud and Zookeeper from Bitnami chart
• Added JVM flags to set heap space to 80% of assigned resources on Solr deployment
• Added blacklight-core name to Solr bitnami chart
• Added extra environment variables(pulled from our existing Docker Swarm configs). These were not documented in the README.
• Added liveness and readiness probes back into deployment
• Adjust worker deployment to use CMD bin/delayed_job run
• Set resource limits/requests for Solr and Web deployment
• Other minor pointers and syntax issues.